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First received: August 28, 2023

Clinical Trial: Fluad vs. Fluzone High-Dose Vaccine Effectiveness Among Adults ?65 Years

Study Status: Completed

Recruit Status: RECRUITING

Condition: Influenza

Study Type: OBSERVATIONAL


Official Title: Relative Vaccine Effectiveness of Adjuvanted Quadrivalent Inactivated Influenza Vaccine vs High-Dose Quadrivalent Inactivated Influenza Vaccine Among Adults ?65 Years for the 2023-24 and 2024-25 Seaso

Brief Summary: This study will evaluate the relative vaccine effectiveness of quadrivalent adjuvanted inactivated influenza vaccine (aIIV4) versus quadrivalent high-dose inactivated influenza vaccine (HD-IIV4) in preventing polymerase chain reaction (PCR)-confirmed influenza and influenza-related outcomes in adults ?65 years of age during the 2023/24 and 2024/25 influenza seasons.The study is an observational study conducted at Kaiser Permanente Northern California (KPNC), an integrated health care system in the United…

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